Z170 M-ITX gaming boot issue.

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 Snipeuout wrote:

 wardog wrote:

I
find it hard, very hard, to believe this could be BIOS related.

That two of the three STRIXs fans, its LEDs, and the CPU fan are affected,
well, to me that's seemingly a power issue. 

OP, have you preformed an out of the case minimal build?

""The PC only booted if power has been completely removed from the
mobo.""

If that is literal, what happens when power is separated  from only the
wall outlet and the PSU cable

To
be as specific as possible, I cycle the switch on the PSU to resolve the issue. That is the only way
to resolve the issue, pulling the plug would probably work the same.

I
did not bench test (min build). However all I have is a MOBO, CPU, COOLER, RAM,
M.2 HD, VGA Card and PSU all inside a case.

 wardog wrote:

OP,
do you power this from the wall, or from a power strip?

Actually
it is plugged into a power strip. Why would that matter thou? Why would it work
from a "just plugged in" cold boot but not a shutdown/boot cycle?

Either
way, I'm going to flash back to 2.1 and plug it directly into the wall and see
if the issue still exists.

Its a very conditional
issue that only occurs after a sleep/shutdown after the first boot. Rebooting/restarting works
fine, anytime, all the time. To be as specifics as I can during the failure
mode here is what happens. Only two of the GPU fans spin and stay on, and the LED
lighting on the card stays whiteish/baby blue. Normally all 3 fans spins for a
second and turn off and the LEDS glow orange. That?�s it, that?�s all the happens.
No CPU fan, no displays, no case fans. As soon as I cycle off (and keep it off for a few seconds) the PSU switch it
boots fine after. It?�s almost like when the boot circuit is triggered after the system was command to shutdown/sleep the system just
turns on the GPU partially. Maybe the NB, CPU and RAM are powered but I have no
way of knowing.

It?�s
super strange. My gut tells me it?�s a bug in the BIOs. The error is so easily
repeatable. Could this be a power supply, mobo power issues or a bio bug?

You can test if the BIOS versions make a difference, as you suspect.

When doing that, I would suggest changing to 1.80, which you said works normally, right? 

If so, use 1.80 for at least two days, a week would be better. You said you were concerned about a potential problem with the board. IMO, letting it run with 1.80 for a week, and logging your results even just once a day (ie Day 1: Ok, woke from Sleep twice, shutdown and restarted once fine) will help you know if it is the board, and if 1.80 does not have the problem.

If you complete a week on 1.80 without incident, then move on to 2.00 If you start getting the issue again, which will be obvious after a week without it, make note of that in your log. I would possibly see if 2.00 failed twice for you, but once is probably enough.

At that point, you could decide to go back to 1.80, or try 2.10. Unless you are getting some great new feature with 2.00 or 2.10 (which I doubt), stay with 1.80 until a new version beyond 2.10 appears. They you can decide if you want to test it.

Did you ever check the Windows Event log when 2.00 or 2.10 failed to wake from Sleep? I know you are not sure if the PC actually woke from Sleep, and only the video card failed to wake, but I have had that happen to me on an older, completely different system. I had entries in the Event log regarding the wake from Sleep error related to my video card and PSU. You have yet to determine if any exist in your Event log.